sourcemod/extensions/bintools/CallWrapper.cpp
David Anderson d4c602f022 updated license headers for most extensions
updated sdk bases for most extensions

--HG--
extra : convert_revision : svn%3A39bc706e-5318-0410-9160-8a85361fbb7c/trunk%401232
2007-08-01 01:54:53 +00:00

113 lines
3.0 KiB
C++

/**
* vim: set ts=4 :
* ================================================================
* SourceMod BinTools Extension
* Copyright (C) 2004-2007 AlliedModders LLC. All rights reserved.
* ================================================================
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License,
* version 3.0, as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* As a special exception, AlliedModders LLC gives you permission to
* link the code of this program (as well as its derivative works) to
* "Half-Life 2," the "Source Engine," the "SourcePawn JIT," and any
* Game MODs that run on software by the Valve Corporation. You must
* obey the GNU General Public License in all respects for all other
* code used. Additionally, AlliedModders LLC grants this exception
* to all derivative works. AlliedModders LLC defines further
* exceptions, found in LICENSE.txt (as of this writing, version
* JULY-31-2007), or <http://www.sourcemod.net/license.php>.
*
* Version: $Id$
*/
#include "extension.h"
#include "CallWrapper.h"
CallWrapper::CallWrapper(CallConvention cv, const PassInfo *paramInfo, const PassInfo *retInfo, unsigned int numParams)
{
m_Cv = cv;
if (numParams)
{
m_Params = new PassEncode[numParams];
for (size_t i=0; i<numParams; i++)
{
m_Params[i].info = paramInfo[i];
}
} else {
m_Params = NULL;
}
if (retInfo)
{
m_RetParam = new PassInfo;
*m_RetParam = *retInfo;
} else {
m_RetParam = NULL;
}
m_NumParams = numParams;
/* Calculate virtual stack offsets for each parameter */
size_t offs = 0;
if (cv == CallConv_ThisCall)
{
offs += sizeof(void *);
}
for (size_t i=0; i<numParams; i++)
{
m_Params[i].offset = offs;
offs += m_Params[i].info.size;
}
}
CallWrapper::~CallWrapper()
{
delete [] m_Params;
delete m_RetParam;
g_SPEngine->ExecFree(m_Addrs[ADDR_CODEBASE]);
}
void CallWrapper::Destroy()
{
delete this;
}
CallConvention CallWrapper::GetCallConvention()
{
return m_Cv;
}
const PassEncode *CallWrapper::GetParamInfo(unsigned int num)
{
return (num+1 > m_NumParams) ? NULL : &m_Params[num];
}
const PassInfo *CallWrapper::GetReturnInfo()
{
return m_RetParam;
}
unsigned int CallWrapper::GetParamCount()
{
return m_NumParams;
}
void CallWrapper::Execute(void *vParamStack, void *retBuffer)
{
typedef void (*CALL_EXECUTE)(void *, void *);
CALL_EXECUTE fn = (CALL_EXECUTE)m_Addrs[ADDR_CODEBASE];
fn(vParamStack, retBuffer);
}